Troubleshooting OC Error Code on Hayes Engage Trailer Brake Controller HA81760
Question:
My tundra back taillight stay on and or shut off and turn back on... my engage system blinks oc pled help
asked by: Mark D
Expert Reply:
With the Hayes Engage Trailer Brake Controller # HA81760 the code OC indicates that the controller does not sense an electrical connection to the trailer brakes, or that the trailer has electric-over-hydraulic brakes which do not work with this unit.
Since you also have an issue with your tail lights staying on the problem is almost surely corrosion inside the trailer connectors.
Corrosion can build up inside a vehicle's socket and inside a trailer's plug and sometimes it is hard to see it. Check both the vehicle socket for signs or corrosion, trapped dirt or water. These issues can cause two different circuits to become bridged together and can also cause connection problems in the brakes circuit.
Clean all contacts on the vehicle socket and on the trailer plug and apply dielectric grease # 11755 once everything works again. The grease will protect the contacts from further corrosion.
Products Referenced in This Question
Dielectric Grease for Electrical Connectors, 2 oz.
- Accessories and Parts
- Trailer Wiring
- Wiring
- Dielectric Grease
- LubriMatic
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Product Page this Question was Asked From
Hayes Engage Trailer Brake Controller - 1 to 3 Axles - Time Delayed
- Trailer Brake Controller
- Time Delayed Controller
- Electric
- Electric over Hydraulic
- Automatic Leveling
- Under-Dash Box
- Dash Mount
- Up to 3 Axles
- Indicator Lights
- Up to 360 Degrees
- Hayes
more information >
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